Which failed experiment eventually led to the invention of Post-it Notes at 3M?

The journey from failed experiment to essential office supply showcases how accidental discoveries can transform industries. In 1968, a scientist at 3M was trying to develop a super-strong adhesive but instead created something with remarkably low adhesion. This 'failure' sat unused until another 3M scientist found a brilliant application for it. The result became one of the most ubiquitous office products worldwide, demonstrating how innovation sometimes comes from unexpected places.

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An attempt to create a super-strong adhesive that accidentally produced a low-tack, reusable adhesive
A paper manufacturing process that created yellow scraps that needed to be repurposed
A workplace efficiency study that showed employees needed better ways to mark document pages
A memo system designed for NASA that required notes that wouldn't float away in zero gravity